Coding to the external LCD 8220

Hi,
I'm developing an app on the 8220 and have not been able to get anything to display on the external canvas.  I've searched through the 4.6.0 api but have not found anything relevant.  Does anyone know the relevant api or if there even is one?
Thanks
Paul

Howdy aimilios__,
If you are having an issue with not getting video on your external display from your MacBook Pro, I would suggest that you troubleshoot using the steps in this article - 
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Thanks for using Apple Support Communities.
Best,
Brett L 

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